Fix PSD import on ARM. (AcademySoftwareFoundation#3589)

The code assumes "char" is "signed char" (as on x86), but on ARM "char" is "unsigned char". Co-authored-by: Joachim Reichel <joachim.reichel@posteo.de>
lgritz · Oct 7, 2022 · 59b5165 · 59b5165
1 parent b9880b5
commit 59b5165
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/psd.imageio/psdinput.cpp b/src/psd.imageio/psdinput.cpp
@@ -2041,7 +2041,8 @@ PSDInput::decompress_packbits(const char* src, char* dst,
     int length;
 
     while (src_remaining > 0 && dst_remaining > 0) {
-        header = *src++;
+        header = *reinterpret_cast<const signed char*>(src);
+        src++;
         src_remaining--;
 
         if (header == 128)